apply {
    headers.removeAll(name)
  }

fun Response.Builder.commonHeaders(headers: Headers) =
  apply {
    this.headers = headers.newBuilder()
  }

fun Response.Builder.commonTrailers(trailersFn: (() -> Headers)) =
  apply {
    this.trailersFn = trailersFn
  }

fun Response.Builder.commonBody(body: ResponseBody) =
  apply {
    this.body = body
  }